This oak wood charcoal oven is the only one of its kind in Seoul, and uses oak wood charcoal to heat up the room. The generated heat is good for stress relief and relaxation, and is one of the most popular facilities.

There are four rooms, ranging from high temperatures to moderate temperatures. If you want to use one of the two higher temperature rooms, it is recommended that you wear socks before entering the rooms. Also, be sure to take off all your jewelry, for they may change color due to the high temperature.

Oooh, that sounds inviting, freezing as I am right now in the middle of winter!